diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ed68670f..7844b2dd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     types: [opened, synchronize, reopened]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: Build
@@ -23,16 +26,21 @@ jobs:
         - java: 18
           maven: verify
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@1b05615854632b887b69ae1be8cbefe72d3ae423 # v2.6.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
         with:
           fetch-depth: 0 # disable shallow checkouts
       - name: Set up Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@0ab4596768b603586c0de567f2430c30f5b0d2b0 # v3.13.0
         with:
           java-version: ${{ matrix.java }}
           distribution: 'temurin'
       - name: Cache Maven packages
-        uses: actions/cache@v3
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2
         with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
@@ -40,7 +48,7 @@ jobs:
       - name: Build and analyze
         run: xvfb-run mvn -B ${{ matrix.maven }}
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d # v3.1.4
         if: matrix.java == '17'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index d22ef5ee..2002b5bb 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -20,6 +20,9 @@ on:
   schedule:
     - cron: '37 12 * * 6'
 
+permissions:
+  contents: read
+
 jobs:
   analyze:
     name: Analyze
@@ -38,12 +41,17 @@ jobs:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@1b05615854632b887b69ae1be8cbefe72d3ae423 # v2.6.0
+      with:
+        egress-policy: audit
+
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@0116bc2df50751f9724a2e35ef1f24d22f90e4e1 # v2.22.3
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -54,7 +62,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@0116bc2df50751f9724a2e35ef1f24d22f90e4e1 # v2.22.3
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -68,4 +76,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@0116bc2df50751f9724a2e35ef1f24d22f90e4e1 # v2.22.3
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
new file mode 100644
index 00000000..9c697a41
--- /dev/null
+++ b/.github/workflows/dependency-review.yml
@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@1b05615854632b887b69ae1be8cbefe72d3ae423 # v2.6.0
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@0efb1d1d84fc9633afcdaad14c485cbbc90ef46c # v2.5.1
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index e65b1fbb..014ff9a9 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -31,6 +31,11 @@ jobs:
       # actions: read
 
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@1b05615854632b887b69ae1be8cbefe72d3ae423 # v2.6.0
+        with:
+          egress-policy: audit
+
       - name: "Checkout code"
         uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
         with:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 00000000..feaa0a9c
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,14 @@
+repos:
+- repo: https://github.com/gherynos/pre-commit-java
+  rev: v0.2.4
+  hooks:
+  - id: Checkstyle
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer
+  - id: trailing-whitespace